Superboy-Prime, (Clark Kent, born Kal-El) also known as Superman-Prime or simply Prime, is a DC Comics superhero turned supervillain, and one of several alternate Supermen. The character first appeared in DC Comics Presents #87 (November 1985), and was created by Elliot S! Maggin and Curt Swan (based upon the original Superboy character by Jerry Siegel and Joe Shuster).Superboy-Prime is from a parallel Earth called Earth-Prime that had no super-heroes.